<?php
/*******************************************************************
 * [JishiGou] (C)2005 - 2099 Cenwor Inc.
 *
 * This is NOT a freeware, use is subject to license terms
 *
 * @Filename smtp.han.php $
 *
 * @Author http://www.jishigou.net $
 *
 * @Date 2011-09-09 10:58:29 678882534 1793277012 9147 $
 *******************************************************************/


if(!defined('IN_JISHIGOU'))
{
    exit('invalid request');
}
class SmtpHandler
{
    
    var $smtp_port;
    var $time_out;
    var $host_name;
    var $log_file;
    var $relay_host;
    var $debug;
    var $auth;
    var $user;
    var $pass;
    
    var $sock;
    
    function SmtpHandler($relay_host = "", $smtp_port = 25, $auth = false, $user, $pass)
    {
        $this -> debug = FALSE;
        $this -> smtp_port = $smtp_port;
        $this -> relay_host = $relay_host;
        $this -> time_out = 30;         $this -> auth = $auth;         $this -> user = $user;
        $this -> pass = $pass;
        $this -> host_name = "localhost";         $this -> log_file = "";
        $this -> sock = FALSE;
        }
    
    function sendmail($to, $from, $subject = "", $body = "", $mailtype, $cc = "", $bcc = "", $additional_headers = "")
    {
		$sys_config = ConfigHandler::get();

        $mail_from = $this -> get_address($this -> strip_comment($from));
        $body = ereg_replace("(^|(\r\n))(\.)", "\1.\3", $body);
        $header = "MIME-Version:1.0\r\n";
        if($mailtype == "HTML"){
            $header .= "Content-Type:text/html\r\n";
            }
        $header .= "To: " . $to . "\r\n";
        if ($cc != ""){
            $header .= "Cc: " . $cc . "\r\n";
            }
        $header .= "From: $from<" . $from . ">\r\n";
        $subject = "=?{$sys_config['charset']}?B?" . base64_encode($subject) . "?=";
        $header .= "Subject: " . $subject . "\r\n";
        $header .= $additional_headers;
        $header .= "Date: " . date("r") . "\r\n";
        $header .= "X-Mailer:By Redhat (PHP/" . phpversion() . ")\r\n";
        list($msec, $sec) = explode(" ", microtime());
        $header .= "Message-ID: <" . date("YmdHis", $sec) . "." . ($msec * 1000000) . "." . $mail_from . ">\r\n";
        $TO = explode(",", $this -> strip_comment($to));
        if ($cc != ""){
            $TO = array_merge($TO, explode(",", $this -> strip_comment($cc)));
            }
        if ($bcc != ""){
            $TO = array_merge($TO, explode(",", $this -> strip_comment($bcc)));
            }
        $sent = TRUE;
        foreach ($TO as $rcpt_to){
            $rcpt_to = $this -> get_address($rcpt_to);
            if (!$this -> smtp_sockopen($rcpt_to)){
                $this -> log_write("Error: Cannot send email to " . $rcpt_to . "\n");
                $sent = FALSE;
                continue;
                }
            if ($this -> smtp_send($this -> host_name, $mail_from, $rcpt_to, $header, $body)){
                $this -> log_write("E-mail has been sent to <" . $rcpt_to . ">\n");
                }else{
                $this -> log_write("Error: Cannot send email to <" . $rcpt_to . ">\n");
                $sent = FALSE;
                }
            fclose($this -> sock);
            $this -> log_write("Disconnected from remote host\n");
            }
        return $sent;
        }
    
    function smtp_send($helo, $from, $to, $header, $body = "")
    {
        if (!$this -> smtp_putcmd("HELO", $helo)){
            return $this -> smtp_error("sending HELO command");
            }
        # auth
        if($this -> auth){
            if (!$this -> smtp_putcmd("AUTH LOGIN", base64_encode($this -> user))){
                return $this -> smtp_error("sending HELO command");
                }
            if (!$this -> smtp_putcmd("", base64_encode($this -> pass))){
                return $this -> smtp_error("sending HELO command");
                }
            }
        if (!$this -> smtp_putcmd("MAIL", "FROM:<" . $from . ">")){
            return $this -> smtp_error("sending MAIL FROM command");
            }
        if (!$this -> smtp_putcmd("RCPT", "TO:<" . $to . ">")){
            return $this -> smtp_error("sending RCPT TO command");
            }
        if (!$this -> smtp_putcmd("DATA")){
            return $this -> smtp_error("sending DATA command");
            }
        if (!$this -> smtp_message($header, $body)){
            return $this -> smtp_error("sending message");
            }
        if (!$this -> smtp_eom()){
            return $this -> smtp_error("sending <CR><LF>.<CR><LF> [EOM]");
            }
        if (!$this -> smtp_putcmd("QUIT")){
            return $this -> smtp_error("sending QUIT command");
            }
        return TRUE;
        }
    function smtp_sockopen($address)
    {
        if ($this -> relay_host == ""){
            return $this -> smtp_sockopen_mx($address);
            }else{
            return $this -> smtp_sockopen_relay();
            }
        }
    function smtp_sockopen_relay()
    {
        $this -> log_write("Trying to " . $this -> relay_host . ":" . $this -> smtp_port . "\n");
        $this -> sock = jfsockopen($this -> relay_host, $this -> smtp_port, $errno, $errstr, $this -> time_out);
        if (!($this -> sock && $this -> smtp_ok())){
            $this -> log_write("Error: Cannot connenct to relay host " . $this -> relay_host . "\n");
            $this -> log_write("Error: " . $errstr . " (" . $errno . ")\n");
            return FALSE;
            }
        $this -> log_write("Connected to relay host " . $this -> relay_host . "\n");
        return TRUE;;
        }
    function smtp_sockopen_mx($address)
    {
        $domain = ereg_replace("^.+@([^@]+)$", "\1", $address);
        if (!@getmxrr($domain, $MXHOSTS)){
            $this -> log_write("Error: Cannot resolve MX \"" . $domain . "\"\n");
            return FALSE;
            }
        foreach ($MXHOSTS as $host){
            $this -> log_write("Trying to " . $host . ":" . $this -> smtp_port . "\n");
            $this -> sock = jfsockopen($host, $this -> smtp_port, $errno, $errstr, $this -> time_out);
            if (!($this -> sock && $this -> smtp_ok())){
                $this -> log_write("Warning: Cannot connect to mx host " . $host . "\n");
                $this -> log_write("Error: " . $errstr . " (" . $errno . ")\n");
                continue;
                }
            $this -> log_write("Connected to mx host " . $host . "\n");
            return TRUE;
            }
        $this -> log_write("Error: Cannot connect to any mx hosts (" . implode(", ", $MXHOSTS) . ")\n");
        return FALSE;
        }
    function smtp_message($header, $body)
    {
        fputs($this -> sock, $header . "\r\n" . $body);
        $this -> smtp_debug("> " . str_replace("\r\n", "\n" . "> ", $header . "\n> " . $body . "\n> "));
        return TRUE;
        }
    function smtp_eom()
    {
        fputs($this -> sock, "\r\n.\r\n");
        $this -> smtp_debug(". [EOM]\n");
        return $this -> smtp_ok();
        }
    function smtp_ok()
    {
        $response = str_replace("\r\n", "", fgets($this -> sock, 512));
        $this -> smtp_debug($response . "\n");
        if (!ereg("^[23]", $response)){
            fputs($this -> sock, "QUIT\r\n");
            fgets($this -> sock, 512);
            $this -> log_write("Error: Remote host returned \"" . $response . "\"\n");
            return FALSE;
            }
        return TRUE;
        }
    function smtp_putcmd($cmd, $arg = "")
    {
        if ($arg != ""){
            if($cmd == "") $cmd = $arg;
            else $cmd = $cmd . " " . $arg;
            }
        fputs($this -> sock, $cmd . "\r\n");
        $this -> smtp_debug("> " . $cmd . "\n");
        return $this -> smtp_ok();
        }
    function smtp_error($string)
    {
        $this -> log_write("Error: Error occurred while " . $string . ".\n");
        return FALSE;
        }
    function log_write($message)
    {
        $this -> smtp_debug($message);
        if ($this -> log_file == ""){
            return TRUE;
            }
        $message = date("M d H:i:s ") . get_current_user() . "[" . getmypid() . "]: " . $message;
        if (!is_file($this -> log_file) || !($fp = @fopen($this -> log_file, "a"))){
            $this -> smtp_debug("Warning: Cannot open log file \"" . $this -> log_file . "\"\n");
            return FALSE;;
            }
        flock($fp, LOCK_EX);
        fputs($fp, $message);
        fclose($fp);
        return TRUE;
        }
    function strip_comment($address)
    {
        $comment = "\([^()]*\)";
        while (ereg($comment, $address)){
            $address = ereg_replace($comment, "", $address);
            }
        return $address;
        }
    function get_address($address)
    {
        $address = ereg_replace("([ \t\r\n])+", "", $address);
        $address = ereg_replace("^.*<(.+)>.*$", "\1", $address);
        return $address;
        }
    function smtp_debug($message)
    {
        if ($this -> debug){
            echo $message;
            }
        }
    }
?>
